LinkedIn connection request message: what to write in 300 characters

You get 300 characters. That is the entire canvas for a LinkedIn connection request message, and it has not grown in years. The instinct is to fill it, to prove you did your homework, to make the case. The data says something more useful: the note barely moves whether the person accepts, but it strongly changes whether they reply once they do. So the real question is not "what do I write to get accepted," it is "what do I write so the right person accepts and then talks back."

This guide answers both. It covers the exact character limit and every other LinkedIn message cap, the note-versus-blank numbers from the largest published study, a decision rule for when a note is worth it, and six templates that fit inside 300 characters. The short version: send blank requests for volume, send a note only when you have a real reason, and put your best writing into the message that lands after they accept.

The 300-character note, and every LinkedIn message limit

A LinkedIn connection request message is capped at 300 characters, and that number is unchanged in 2026. It is the shortest writing field LinkedIn gives you. A direct message to someone you are already connected to allows 8,000 characters, and an InMail allows 200 characters in the subject line and 1,900 in the body. Spaces and emojis count against every limit.

These character limits are set by LinkedIn and current as of 2026.

Two things follow from this table. First, the connection note is by far your tightest constraint, so it has to earn every character. Second, the field with real room to write is the first message after you connect, not the note itself. That reframing matters, because most people burn their effort on the 300-character note and then send a lazy "thanks for connecting" once they are in. The numbers below say to do the opposite.

There is also a quiet catch for free accounts. LinkedIn restricts free users to a small monthly quota of personalized notes, a figure widely reported at around five per month, after which you can still send blank requests but not noted ones. Premium, Sales Navigator, and Recruiter accounts get unlimited notes within the usual weekly connection cap. If you are on a free account, that quota is one more reason to spend notes only where they clearly pay off.

Note or no note? What the acceptance data actually shows

A personalized note barely changes whether someone accepts. In Belkins' 2026 study of millions of outreach touchpoints, blank requests accepted at 27.6 percent and noted requests at 25.3 percent. The note pays off after the accept: noted requests replied at 8.2 percent versus 5.3 percent for blank ones. So the note is a downstream lever, not an acceptance lever.

Read the table as one finding, not two. Whether you attach a note changes acceptance by roughly a point in the wrong direction, but it lifts the eventual reply rate by more than half. The likeliest reason is self-selection: someone who accepts knowing what you want has already decided the conversation is welcome. A blank request collects more connections, a noted request collects fewer but warmer ones. Neither is wrong, they optimize for different goals.

The exception is note quality. In the Belkins numbers, "note" mostly means a templated, mail-merged note, and those add nothing at the accept step. When a note references something genuinely specific, the picture changes: notes that cite a real, recent trigger tend to accept meaningfully higher than generic or blank ones, while a mail-merged note that only inserts a first name does not. We break down acceptance by note type in our guide to LinkedIn connection acceptance rate benchmarks.

When to add a note and when to leave it blank

Add a note only when you have a real reason to reference, a shared connection, a recent post, a job change, a mutual group, or a genuine trigger. If your note would be a generic "I would love to connect and expand my network," send it blank instead. A templated note accepts slightly worse than blank and burns your free-account note quota for nothing. Use this decision rule.

The pattern underneath the table: personalization is only worth the characters when it is true. A merge field that inserts a first name is not personalization, it is a mail merge, and LinkedIn recipients read it as one. If you cannot point at something specific about the person, the honest move is a blank request, which also leaves your note quota for the prospects where a note actually earns its keep.

6 LinkedIn connection request message templates that fit 300 characters

Every template below stays well under 300 characters, references a real reason to connect, and avoids a pitch in the note itself. The job of the note is to get accepted by the right person, not to sell. Aim for roughly 200 characters or fewer, keep it to one idea, and save the ask for after they connect. Match the template to the trigger you actually have.

1. Mutual connection. "Hi [First name], we are both connected to [mutual name], and I have been following [their company]'s work on [topic]. Would like to connect and keep up with what you share."
2. Recent post. "Hi [First name], your post on [topic] this week put words to something my team has been wrestling with. Connecting so I do not miss the next one."
3. Shared group or event. "Hi [First name], fellow [group or event name] member here. Liked your take on [topic] and wanted to connect with more people working on the same problem."
4. New role. "Hi [First name], congrats on the move to [new role] at [company]. The first stretch in a role like that is a lot. Happy to connect and trade notes when it is useful."
5. Content value. "Hi [First name], I share notes on [topic] for [role], and our work looks like it overlaps. No pitch, just adding good people in the space. Open to connecting?"
6. Referral. "Hi [First name], [referrer] mentioned you are the person to know on [topic]. I would value connecting and learning how you approach [specific challenge]."

Swap the bracketed fields for something true, not something generic, and delete any template where you cannot fill every bracket honestly. For a wider set of message frameworks across the whole sequence, see our LinkedIn outreach templates library and the LinkedIn cold message template guide for the follow-ups.

The message that actually matters: your first note after they accept

Once someone accepts, you get 8,000 characters and a message that lands in their normal inbox, not the note field. That is where the real conversation starts, and where the reply-rate lift from the earlier note gets cashed in. Keep this first message short anyway, under about 400 characters, lead with why you reached out, and make one small, easy ask rather than a pitch.

The connection note and the first message are two different jobs. The note is a doorway, worth roughly 200 characters and only when you have a real reason. The first message is the conversation opener, and it deserves your best writing because it is the one people actually reply to. Reply rate on the message sent after connecting holds far steadier than reply rate on the request itself, so the after-accept message is where consistent effort pays off. Reference the specific reason you connected, then ask something that costs the other person almost nothing to answer.

Connection request or InMail? Pick the free channel first

For most cold outreach, a connection request beats an InMail. Connection requests are free, build a lasting first-degree relationship, and reach higher reply rates than InMail in the large-sample data. InMail wins in one narrow case: senior executives who accept very few connection requests, where paying to bypass the accept gate can be worth it. Otherwise, spend your requests first.

Belkins' 2026 study puts cold connection-request campaigns at a 7.9 percent reply rate and warm messenger campaigns, messaging people you already know, at 12.2 percent, both while staying free. InMail costs a credit per send and creates no lasting connection. The full cost and reply-rate breakdown, including the executive exception and a hybrid sequence, is in our guide to InMail versus connection requests. And whichever channel you use, stay under LinkedIn's roughly 100 invitations per week, which we cover in LinkedIn connection request limits.

How to send fewer, better notes

The whole lesson compresses to one order of operations: target well, connect blank for volume or noted only when you have a real trigger, and put your effort into the first message after the accept. The lever that moves acceptance most is not note copy, it is who you send to. A trigger-based note accepts higher than a generic one because it is aimed at someone the trigger says is likely to care. Build the list before you write the note.

That order is exactly how BeReach works. It finds fit people and real triggers from public data with no connected account in the loop, so you can build a tight, exportable list and spot who just posted, changed roles, or is hiring before you ever spend an invitation. By default it sends bare invites, because the data says blank requests accept slightly higher and use zero AI, and it writes a note only when your playbook asks for one. Nothing sends without your approval, it runs on one included model, and your LinkedIn account is only touched at the final approved send. Start from a free LinkedIn people search tool to build the list, and current plans are on the pricing page.

Frequently asked questions