Mixmax is a suite. Easy Reply is the buttons.
Both can put a clickable answer in an email so the other person does not have to write a paragraph. The products around that click are different, and so is the mail you get back.
What Mixmax is
Mixmax is a sales engagement product in Gmail. Their help center describes sequences, templates, and four kinds of polls: a yes/no question, a multiple-choice poll, a Q&A survey with free-text answers, and a group event poll. When someone answers, Mixmax emails you a notification. By default it also emails them a confirmation that the vote was recorded. That confirmation can be turned off in their settings. A poll click inside a Mixmax sequence counts as a reply in the sequence.
What Easy Reply is
Easy Reply is a Chrome extension that adds one question and two to four answers to a Gmail you are already writing. The recipient does not install anything. They click an answer. You get that answer back on the thread, and it shows in Insights. There is no second confirmation email to them. Easy Reply does not run sequences, book meetings, or sync a CRM.
Side by side
What it is for
Easy Reply. One question and two to four answers, on the email you are sending.
Mixmax. Sequences, templates, scheduling, and polls, including yes/no, multiple choice, free-text Q&A, and group scheduling.
What the recipient does
Easy Reply. Clicks an answer. They do not install Easy Reply.
Mixmax. Clicks an answer, or types into a Q&A survey. They do not need a Mixmax account.
What you receive
Easy Reply. The answer, back on the thread.
Mixmax. A separate notification email. In a sequence, the click counts as a reply. They are also emailed a confirmation unless you turn that off.
What it does not do
Easy Reply. Sequences, open tracking, calendar booking, or a CRM.
Mixmax. It is not a single-purpose button. You are in their suite to send the poll.
When to use Mixmax
Use Mixmax when you want the rest of the suite: sequences, templates, scheduling, and polls with a free-text survey or a group schedule. Easy Reply will not replace that.
When to use Easy Reply
Use Easy Reply when you are already in Gmail and the only missing piece is a yes, a no, or a not now. Free covers 50 sends a month. Pro is $19 a month for unlimited sends.
FAQ
Does the other person need Mixmax or Easy Reply?
No. You install the tool you are sending from. They click an answer. Mixmax also emails them a vote confirmation unless you disable it. Easy Reply does not send that confirmation.
Should I replace Mixmax with Easy Reply?
Only if the part you use is the poll. Mixmax sequences, templates, and scheduling are a different product. Keep Mixmax for those. Add Easy Reply if you want buttons on a Gmail you are writing by hand.
Which one gets more replies?
We do not have a number, and we will not invent one. What you can check is where the answer shows up, whether the recipient gets an extra email, and how much other product you have to adopt to send the question.
Free for 50 sends a month. The other person does not install anything.