You can have up to 6 additional email accounts in Comcast besides your primary account. Sign on to your primary account and click on the Users & Settings tab at the top of the page. You should see a link in blue underneath your user name that says Create Secondary User.
Some tomato plant leaves yellow due to a lack of sunlight on mature plants. When the plants become large, bushy, and heavy with fruit, the top portions of the plant can block the lower portions from getting sunlight. This can cause the leaves to yellow, and is really nothing to worry about.
Nutrient deficiencies sometimes result in yellowed leaves. A nitrogen, magnesium or sulfur deficiency may cause yellowing of leaves on pepper plants. Signs of a nitrogen deficiency begin with yellow leaves at the bottom of the plants, and the yellowing travels upward. New leaves may appear light green or slightly yellowed, and growth typically slows.