Collect Emails From Your Stores

Place a newsletter sign-up clipboard next to every register in all your locations. Have your employees mention the newsletter and emphasize the benefits (exclusive discounts, events, educational info, reminders, etc.)
Incentivize your employees. Give them financial rewards for collecting valid email addresses.
Offer a birthday email club, and give something special to those who sign up.
Send a postcard. Have a list of postal addresses without emails? Send a direct mail offer that can be redeemed when the recipient signs up for your email list.
Ask people over the phone. If people call your business for whatever reason, don’t hang up until you’ve asked if you can add them to your newsletter.
Host your own event – invite art galleries, software companies (one here has a party every quarter and invites the neighboring businesses), retail shops, consultants (lunch & learn) can all host an event and request attendees to sign up.

Collect Emails From Social Media

Create a “sign up” call to action on your Facebook business page.
Create enticing visuals encouraging people to sign up for your list, and post them on various social media channels (especially Facebook, Twitter, Instagram, Pinterest, LinkedIn).
Use Pinterest! to build your email list. This network may be underutilized for your business. and could be a gold mine.
Make and upload videos to YouTube, then include a link at the end of every video directing people to your online signup form.
Post your sign-up form page on LinkedIn and if possible sponsor it.
Include a link to the email sign-up form in your Twitter business profile description. Here’s how to edit your Twitter profile.
Create a tab on your business Facebook page and include an email sign-up form.
Offer “Email only” discounts and mention them on your sign-up form page and on social. Don’t use those offers anywhere but by email.
Post a photo of an item or an offer to giveaway on Instagram. Then, include a link in your Instagram bio asking people to sign up to participate in the giveaway.
Create a Twitter lead generation card to advertise and gain sign-ups for your email newsletter.

Include a link to your email sign-up form in the main navigation bar of your website and/or blog. (Or better yet, include a signup form in the main navigation bar).
Give something away like samples, a tour, a consultation, a free how-to guide, infographic, how-to video, etc. Have people sign up for your email list to qualify.
Get referrals. Ask your customers to refer you and your email list, and in exchange, give them a discount.
Use a Popup (the good kind). When someone attempts to leave your site, display a popup window and ask for the email address. Use a tool like Popup Domination, which uses technology to determine when someone’s about to leave your site.
Use a hosted sign up a form landing page.
Include a call to action, a link and/or a signup form at the end of every blog post you write.
Add a link or sign up form in the footer, and/or sidebar of your website.
Include a link or sign up form on your company’s “about us” page.